Topic Author
Posts: 277
Joined: Fri Jul 29, 2005 3:40 pm

FS9 Fuel Calculations?

Sun Sep 11, 2005 7:17 am

I calculate my fuel for a 4500nm with a B777-300 flight as follows:

4500nm/480knts = 9.375 hrs x 22,000lbs = 206,250lbs x 1.08 = 222,750lbs and depending on the airport I'll add taxi fuel according to EST. taxi time.

So I will use 222,300lbs + taxi fuel to complete a 4500nm trip.

The 22,000lbs is fuel consumption per engine per hr. (11,000 x 2).
The 1.08 is used as my reserve fuel, usually 45 min. worth. (16,500)

Are these calculations correct? I usually arrive at my destination with about 20,000lbs in the tank when landing.

I think that the fuel calculations given in FS are not realistic so I compute my own for each trip.

How do you calculate fuel and cruise level for your trips?
B777 greatest Airliner ever built!
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Joined: Tue Mar 08, 2005 5:20 pm

RE: FS9 Fuel Calculations?

Tue Sep 13, 2005 9:47 pm

I do mine a bit simpler than that Big grin

I do the Route-Planner, see what i need then add on about 50% extra.
Usually get it about right  Wink
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Joined: Sun Jan 14, 2001 3:45 pm

RE: FS9 Fuel Calculations?

Sat Sep 17, 2005 12:16 am

While nowhere near exact, if we use 121 flag rules, and the figure that you have provided, I estimate a minimum release fuel of 225,000 pounds.

BURN 206250
ALTN 000000
INTL 002200
HOLD 016500
RLSF 224950
LAND 018700
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Posts: 452
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RE: FS9 Fuel Calculations?

Mon Sep 19, 2005 7:28 pm

Yeah, it doesn't seem to be perfectaly accurate. On a different note, according to FS the Learjet 45 flies 2200NM. maximum. I managed to fly it just over 5000NM(No joke) non stop, that being with a 70pounds light pilot and no pax or baggage, and at a little bit higher altitudes. Does it really make such a difference?i can't imagine so, in real life i mean.

Cheers, Konstantin G.

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